Senior Technical Operations Engineer – Email, Mautic, Data

• Own and scale the infrastructure behind Metricool's product email system
• Optimize servers, heavy MySQL databases, and RabbitMQ queues behind the Mautic instance
• Improve Mautic processes including segment synchronization, campaigns, sending jobs, and cron jobs
• Monitor sends, queues, and servers; detect and resolve issues before campaign impact
• Scale the platform to send approximately 3 million emails per day without outages
• Maintain email deliverability, including SPF, DKIM, DMARC, bounces, and complaints
• Handle and triage Marketing and Product requests and bug reports via Slack
• Respond to incidents during email sends, with backup available and no formal on-call
• Maintain and evolve Mautic custom PHP/Symfony code using AI tools as support
• Document architecture, runbooks, and fixes
• Contribute to the data platform and attribution work, including ClickHouse, Python export pipelines, Go services, and Aerospike
• Collaborate with Marketing, Product, Data, and Revenue to create lasting fixes
• Work with Borja, the technical lead, in a feedback-driven, service-minded environment
• Participate in Black Friday sending processes and prepare to take full ownership the following year

• The candidate must be located in Spain
• At least 5 years of experience in systems, infrastructure or technical operations
• Senior technical support specialist-level knowledge covering servers, Linux, DNS, infrastructure, networking, traffic, email sending, domain reputation and security
• Proven experience administering and optimizing MySQL databases under heavy load
• English is mandatory (minimum B2)
• Spanish is highly preferred
• PHP; Symfony is a strong plus
• AWS experience, especially EC2 and SES, is highly valuable
• Experience managing email-sending infrastructure is highly valuable
• Bonus, not required from day one: Mautic, RabbitMQ, Aerospike, ClickHouse, data pipelines, Go, and AI tools for writing and maintaining code
• Strong problem-solving and service mindset
• Ability to understand non-technical teams' needs and communicate clearly
• Calm and curious under a high volume of requests
• Genuine curiosity and passion for how the Internet works, backed by solid hands-on fundamentals
• Collaborative and low-ego approach

• Truly Remote: Work from wherever you're most productive
• 100% Flexible Schedule
• Health Insurance
• Language Lessons
• The Epic Weekend: Once a year, we all get together in person
• Growth opportunities with no ceiling for curious employees who take ownership
• Tools provided for remote work